Tech note: Fast, simple, homogeneous assays for characterisation of Fc receptor binding using AlphaLISA

AlphaLISA® provides a robust assay that facilitates the design and development of antibody therapeutics.

Once an antibody binds to its target, the subsequent binding of the fragment crystallizable gamma receptors (FcGRs) and neonatal Fc receptors (FcRn) is a crucial step for the initiation and control of cell-mediated effector functions of the immune system. During early drug development, as potential therapeutic antibodies are selected and engineered, changes in Fc receptor affinity can be indicative of changes in effector function and serum half-life. Furthermore, when measured in scaled-up production, binding of therapeutic antibodies to Fc receptors can serve as a metric for quality control (QC).

In this technical note, we show that AlphaLISA Fc receptor binding kits enable fast, simple measurement of Fc receptor binding with no wash steps and no separation steps.